The assessment of droughts in Northern China and Mongolian areas using PDSI and relevant large‐scale environments
ABSTRACT This study assessed drought conditions in northern China and Mongolian areas using the Palmer drought severity index ( PDSI ). Droughts in this area were intensified throughout all seasons. In particular, this intensifying trend was pronounced in the summer and autumn. In the summer, the PD...
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crwiley:10.1002/joc.4553 2024-09-09T19:57:25+00:00 The assessment of droughts in Northern China and Mongolian areas using PDSI and relevant large‐scale environments Choi, Jae‐Won Kim, In‐Gyum Kim, Jeoung‐Yun Kim, Baek‐Jo Park, Cheol‐Hong Kim, Do‐Woo Korea Meteorological Administration 2015 http://dx.doi.org/10.1002/joc.4553 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.4553 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.4553 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 36, issue 9, page 3259-3269 ISSN 0899-8418 1097-0088 journal-article 2015 crwiley https://doi.org/10.1002/joc.4553 2024-07-25T04:21:04Z ABSTRACT This study assessed drought conditions in northern China and Mongolian areas using the Palmer drought severity index ( PDSI ). Droughts in this area were intensified throughout all seasons. In particular, this intensifying trend was pronounced in the summer and autumn. In the summer, the PDSI showed an overall increase from the early 1990s to the late 1990s, and then, it rapidly decreased after the late 1990s. Therefore, this study focused on summer droughts and analysed mean differences before the late 1990s (9098) and after the late 1990s (9905). Regarding differences in 850 hPa stream flows between the two periods, anomalous anticyclonic circulations were strengthened in northern China and Mongolia that showed strong negative anomalies in the PDSI . These anomalous anticyclones were formed as a positive North Atlantic Oscillation pattern formed in the European region spread eastward in the form of wave trains. The anomalous anticyclones formed in northern China and Mongolia led to reduced total cloud cover. As a result, this region exhibited high sensible heat net fluxes. Consequently, warm and dry anticyclones may have recently been strengthened in this region, thereby intensifying droughts. As this shows, recently strengthened warm and dry anticyclones in northern China and Mongolia were associated with recently reduced snow depths in this region during the preceding spring. In recent years, the frequency of Asian dust has also increased due to warm and dry air conditions. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library International Journal of Climatology 36 9 3259 3269 |
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Open Polar |
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Wiley Online Library |
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English |
description |
ABSTRACT This study assessed drought conditions in northern China and Mongolian areas using the Palmer drought severity index ( PDSI ). Droughts in this area were intensified throughout all seasons. In particular, this intensifying trend was pronounced in the summer and autumn. In the summer, the PDSI showed an overall increase from the early 1990s to the late 1990s, and then, it rapidly decreased after the late 1990s. Therefore, this study focused on summer droughts and analysed mean differences before the late 1990s (9098) and after the late 1990s (9905). Regarding differences in 850 hPa stream flows between the two periods, anomalous anticyclonic circulations were strengthened in northern China and Mongolia that showed strong negative anomalies in the PDSI . These anomalous anticyclones were formed as a positive North Atlantic Oscillation pattern formed in the European region spread eastward in the form of wave trains. The anomalous anticyclones formed in northern China and Mongolia led to reduced total cloud cover. As a result, this region exhibited high sensible heat net fluxes. Consequently, warm and dry anticyclones may have recently been strengthened in this region, thereby intensifying droughts. As this shows, recently strengthened warm and dry anticyclones in northern China and Mongolia were associated with recently reduced snow depths in this region during the preceding spring. In recent years, the frequency of Asian dust has also increased due to warm and dry air conditions. |
author2 |
Korea Meteorological Administration |
format |
Article in Journal/Newspaper |
author |
Choi, Jae‐Won Kim, In‐Gyum Kim, Jeoung‐Yun Kim, Baek‐Jo Park, Cheol‐Hong Kim, Do‐Woo |
spellingShingle |
Choi, Jae‐Won Kim, In‐Gyum Kim, Jeoung‐Yun Kim, Baek‐Jo Park, Cheol‐Hong Kim, Do‐Woo The assessment of droughts in Northern China and Mongolian areas using PDSI and relevant large‐scale environments |
author_facet |
Choi, Jae‐Won Kim, In‐Gyum Kim, Jeoung‐Yun Kim, Baek‐Jo Park, Cheol‐Hong Kim, Do‐Woo |
author_sort |
Choi, Jae‐Won |
title |
The assessment of droughts in Northern China and Mongolian areas using PDSI and relevant large‐scale environments |
title_short |
The assessment of droughts in Northern China and Mongolian areas using PDSI and relevant large‐scale environments |
title_full |
The assessment of droughts in Northern China and Mongolian areas using PDSI and relevant large‐scale environments |
title_fullStr |
The assessment of droughts in Northern China and Mongolian areas using PDSI and relevant large‐scale environments |
title_full_unstemmed |
The assessment of droughts in Northern China and Mongolian areas using PDSI and relevant large‐scale environments |
title_sort |
assessment of droughts in northern china and mongolian areas using pdsi and relevant large‐scale environments |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1002/joc.4553 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.4553 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.4553 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
International Journal of Climatology volume 36, issue 9, page 3259-3269 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.4553 |
container_title |
International Journal of Climatology |
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36 |
container_issue |
9 |
container_start_page |
3259 |
op_container_end_page |
3269 |
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1809928330246356992 |